drm/switcheroo: track state of switch in drivers.

We need to track the state of the switch in drivers, so that after s/r
we don't resume the card we've explicitly switched off before. Also
don't allow a userspace open to occur if we've switched the gpu off.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 0f14f94ed8f4..a4694c610330 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1121,9 +1121,13 @@ struct drm_device {
         spinlock_t object_name_lock;
         struct idr object_name_idr;
         /*@} */
-
+        int switch_power_state;
 };
 
+#define DRM_SWITCH_POWER_ON 0
+#define DRM_SWITCH_POWER_OFF 1
+#define DRM_SWITCH_POWER_CHANGING 2
+
 static __inline__ int drm_core_check_feature(struct drm_device *dev,
                                              int feature)
 {